Improvement in coupling-pipes



G. FBTTEB an J. s. MCGLINTOCK.

COUPLING PIPBIS. f

No. 15,560.` PatentedAug.19, 1856.-

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UNITED STATES 'PATENT OFFICE.

GEORGE FETTER, OF PHILADELPHIA, PENNSYLVANIA, AND JOHN S.

Y .MCCLNTOCIL OF LIBERTYVILLE, ILLNOIS. l

INI PROVEM ENT IN COU PLlNG-PIi/ES Specification forming part of LettersPatent No. 15,560, dated August 19, 1856.

To all whom it may 0011.007171.:`

Be it known that we, GEORGE FETTEB, of the cit-y of Philadelphia andState of Penn- Sylvania, and JOHN S. MCCLINTOCK, of Libertyville,Illinois, have invented a new and improved Mode of Attaching Connections.to

Lead Pipes; and we do hereby declare that the following is a full,clear, and exact description of lthe same, reference being had to theaccompanying drawings, and to the iig ures and letters ofreferencemarked thereon.

Our invention relates to a mode of rapidly attaching to lead pipes,stop-cocks, and other metal connections Without the assistance ofsolder; and it consists in surrounding the lend of the lead pipe towhich it is required to attach a connection with a tapering ferrule ofbra-ss or other metal harder than lead. On the outside of this ferruleis a raised portion with six, eight, or any other convenient num-l berof sides for the purpose of receiving a screw-key or other similarh-oldfast. On the inside of the ferrule are any convenient nu mber ot'projections, which are caused to penetrate the outside of the lead pipeby the preparatory process of driving' a tapering plug into 'the end ofthe same, thus causing the end of the lead pipe to iitI tightly to thein side of the tapering ,ferrule, the projections in which prevent onefrom turning Without the other. rlhe plug-being withdrawn, the end ofthe pipe is now ready for receiving the connection. The portion of thelatter which enters the pipe is cut with a tapering serew,t11`e threadsof the screw terminatinga short distance from the end of theconnection,which is turned perfectly smooth and rounded off. The ferruleon the end of the lead pipe being now held by va screw-key on the raisedportion, the connection is screwed into the tapering end formed by theplug, the threads on the connection cutting corresponding threads on theinside of the softer metal of the pipe and the smooth end-of theconnection acting as a guide and preventing the burring up of the leadduring the operation. The whole is designed and arranged for the purposeof .making a perfectly air and vater tight attachment With greatrapidity and Without solder and easily accomplished by the mostunskillful Workman. c

- In order to enable others skilled in the art to make and useourinvention, ive will now proceed to describe its construction andoperation.`

On reference to the drawings which form a part of this specification,Figure l isa view,

partly in section, of an ordinary stop-cock as attached by our improvedmode to the end of a lead pipe. Fig. 2 is a view of aout-oit connection,the pipes being attached to both ends of the same. Fig. 3 is anuninterrupted connection showing our improved mode of fastening. Fig. 4are detached views in section of part of a lead pipe, the ferrule andpart of the connection being separated from each other. Fig. 5 is an endview of the ferrule inclosing the lead pipe and showing the projectionsfor preventing the pipe from turning Without the fer-rule. Fig. 6 is asectional vieu1 showing the process of adapting the end of the pipe tothe inside of the ferrule by means ofa tapering plug. Fig. is asectional View showing the bad effects of screwing a tapering connectionWithouta smooth end into the end of the pipe.

The same letters of reference allude to similar parts throughout theseveral views.

A is a stop-cock; B, the pipe to which it is connected. The end ofthe'scock which enters the pipe is tapering and out with ascrew, a smallportion o at the extreme en d being smooth and rounded, as best observedin l, and hereinafter alluded to.

C is the tapering fcrrulc, having a raised portion b with six or eightsides, and on the inside any convenient number of projections d d.' (SeeFig. 5.) This ferrulcis in the rst instance placed on the end of thepipe and a hard wood or metal tapering plug G driven into the end of thesame, (see Fig. 6,) which forces the lead tight against the inside ofthe v ferrule and causes the projections d to penetrate the lead in sucha manner that the pipe cannot possibly turn without the ferrule, andalso gives the inside of the pipe a taper adapted to the shape of theconnections, so that on removing the plug the pipe is ready forreceiving any connection required.

In all cases the part of the connection which enters the pipe has a,smooth end, as wehave found by repeated experiments that Without thisthere is great difiiculty in preventing the lead from burr-ing upl andcausing an inefficient joint, as illustrated at w, Fig.v 7, in whichinstance the screw is 'cut to the extreme end ot' the taper on theconnection. The smooth end a eftectually prevents this and serves as aguide in screwing the connection into the pipe. In performing the latteroperation the ferrule is held on the raised portion b by a screw-keywhile the operator turnsl the connection, the projection (l in thet'errule performing the important duty of preventing the pipe fromturning within the ferrule. Tnattaching a connection between the ends oftwo pipes, as in Figs. 2 and 3, it is necessary to have recourse to aleft and right handed screw, so that on turning the connection to inakeajoint the two ends of the pipes are drawn'toward each other.

Although in the drawings we have shown but three different kinds ofconnections, it will easily be seen that any of the fixtures used byplumbers and lusually secured by solder may be connected withoutdeparting .f rom the above-described operation.

le do not claim, exclusively, the inclosing of the ends of lead pipes ina tapering ferrule of metal harder than lead for the purpose ofattaching connections thereto and the uso of right and left handedscrews on such con nections; but

We claim- As a new and improved mode of attaching connections to leadpipes, the tapering screw terminating in a smooth and rounded end ontheconnect-ions for the purpose of guiding the said screw and preventingthe lead from burring up inside the pipe, in combination with ataperingferrule on the end of the lead pipe, said ferrule having any convenientnumber of projections for preventing the pipe from turning Withinthe'ferrule While the end of the said connection is being screwed intothe pipe.

GEORGE FETTER. Witnesses to the signatu re of George Fetter:

HENRY HOWSON, THEoDoRE BERGNER.

JOHN S. MCCLINTOGK'. fitnesses to the signature ot John S. Mc- Clintock:

RICHARD McCLINroeK, EDGAR G. PHnLrs.V

